2010 Cadillac Truck SRX FWD V6-3.0L Page 1681

2010 Cadillac Truck SRX FWD V6-3.0L Page 1681

- Input Speed Sensor Performance

DTC P0717

- Input Speed Sensor Circuit Low Voltage

Diagnostic Fault Information

Typical Scan Tool Data

Circuit/System Description

The input speed sensor (ISS) is a hall-effect type sensor. The ISS mounts to the inside of the automatic transmission case assembly and connects to

the control solenoid valve assembly through a 2-wire harness and connector. The sensor faces the reluctor wheel which is attached to the 4-5-6

clutch and 3-5-R clutch housing. The sensor receives 8.3-9.3 volts on the ISS supply voltage circuit from the transmission control module (TCM).

As the 4-5-6 clutch and 3-5-R clutch housing rotates, the sensor produces a signal frequency based on the teeth of the reluctor wheel. This signal is

transmitted through the ISS signal circuit to the TCM. The TCM uses the ISS signal to determine line pressure, transmission shift patterns, torque

converter clutch (TCC) slip speed, and gear ratio.

Conditions for Running the DTC

P0716

* No DTCs P0101, P0102, P0103, P0121, P0122, P0123, P0716, P0717, P0752, P0973, or P0974.

* The engine speed is greater than 400 RPM for 5 seconds.

* The ignition voltage is greater than 8.6 volts.

* The engine torque signal is valid.

* The throttle position signal is valid.

P0717

* No DTC P0717.

* The engine speed is greater than 400 RPM for 5 seconds.

* The ignition voltage is greater than 8.6 volts.

* The vehicle speed is greater than 16 km/h (10 mph).

* The engine torque is greater than 50 Nm (37 lb ft).

* DTC P0717 has not passed this ignition cycle.

Conditions for Setting the DTC

P0716

Transmission input speed drops 1,350 RPM for greater than 1.0 second.

P0717

Transmission input shaft speed is less than 50 RPM for 5.0 seconds.

Action Taken When the DTC Sets

* P0716 and P0717 are Type A DTCs.

* The TCM freezes transmission adaptive functions.

* The TCM commands the high side driver off.

* The TCM commands TCC off.

* The TCM commands maximum line pressure.

* The TCM disables neutral idle.

* The TCM inhibits Tap Up/Down function.

* The TCM inhibits manual shifting of forward gears.

* The TCM allows the transmission to operate in reverse, third, and fifth range.